Feature request: Add copy button to inline exception overlay during debug

[lewinpauli]

The inline exception message shown in the editor during Flutter debug sessions
cannot be copied on Linux (text selection is ignored, Ctrl+C copies the source
line instead of the exception text).

As a workaround until flutter/flutter#182756 is resolved, it would be very
helpful to have a small copy button on the inline exception widget so users can
copy the exception message without relying on text selection or Ctrl+C.

Environment:

• OS: Linux Fedora 44 (GNOME)
• VS Code: 1.122.1
• Dart/Flutter Extension: 3.136.0

[lewinpauli]

This issue can be closed I created it in the wrong repo i think, this is a duplicate of Dart-Code/Dart-Code#6070